Summary

We spent 5.7 hours reading reviews from experts and users. In summary, this is what runners think:

7 reasons to buy

  • The lightweight construction of the Adidas Adizero Boston 8 is welcomed by most consumers.
  • ‘Comfortable’ is a word that many have used to describe their time wearing this product.
  • The Boost™ cushioning unit is welcomed as a responsive underfoot piece for all-day activities.
  • A handful of testers have noted that the forefoot section has a roomy construction that accommodates natural toe-splay.
  • Push-off power is appreciated because the midsole apparently balances firmness and flexibility.
  • The upper unit of this running shoe is considered secure and breathable.
  • The traction provided by the outsole unit is welcomed as it is deemed precise and well-balanced.

2 reasons not to buy

  • A few people have stated that the Adidas Adizero Boston 8 has a stiffness that calls for a few break-in periods.
  • A couple of purchasers have reported some discomfort caused by the padding and shape of the heel collar.

Bottom line

The overall reaction towards the Adidas Adizero Boston 8 has been mostly positive. People consider this running shoe an approachable update for their daily activities. The lightweight structure, comfortable build, spacious toe-box, and traction-ready outsole are highlighted as the best parts of the design. On the other hand, the irritating heel part of the upper and the need for a break-in period make up the negative points.

Fans of road running shoes are the market of the Adidas Adizero Boston 8.

Facts

Terrain: Road
Arch support: Neutral
Weight: Men: 9oz | Women: 7oz
Heel to toe drop: Men: 10mm | Women: 10mm
Pronation: Neutral Pronation
Arch type: High arch
Use: Jogging
Strike Pattern: Heel strike
Distance: Daily running | Long distance | Marathon
Heel height: Men: 29mm | Women: 29mm
Forefoot height: Men: 19mm | Women: 19mm
Release date: Jun 2019
Brand: Adidas
Width: Men: Normal, Wide | Women: Normal
Price: $120
Colorways: Black, Blue, Grey, Orange, Pink, Red
Size
Small True to size Large
See more facts

Expert Reviews

Experts are runners, who post reviews at youtube, directly at RunRepeat or at their own websites. Each expert is categorized from level 1 to level 5 based on expertise. See stats on expert reviews and how we calculate scores here.

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88 / 100 based on 8 expert reviews

  • 90 / 100 | Jake Boesch

    Adidas Adizero Boston 8: A snappy, versatile, and familiar ride

    More photos

    The Adidas Boston Boost 5 was a nearly perfect shoe for me: lightweight, durable, springy, and smooth. I bought multiple pairs and used them for all types of running: long runs, trails, workouts, daily training, and races.

    After the Boston Boost 5, I tried versions 6 and 7. However, I did not like them as much as the five, due to their lower heel collar and more sluggish feel.

    Now, that I have run 50 miles in the Adidas Adizero Boston 8, I have noticed some durability issues and have a couple of critiques, but I am largely pleased with the shoes’ snappy and do-everything-well capabilities. 

     

    Looks

    The aesthetic of the Boston 8, especially in my black and white colorway, appears bland and the materials seem cheap. The shoe has big Adidas stripes toward the front and a glossy “BOSTON” imprint on the heels.

     

     

    I appreciate simple and subtle uppers; the Boston 8 maintains simplicity but lacks subtly due to the large and bold placement of the three stripes logo.

     

     

    Further, the materials used in the previous model seemed to be of higher quality. With the Boston 8, Adidas uses a scratchy, plastic-like mesh that would be fine on $99 shoe but disappoints in the $120 price range.

    Fit

    The Boston 8 fits true to size and worked with my foot perfectly. It definitely is not as narrow as some of its predecessors and should fit most feet, but it still has a race-oriented snug fit that may be a bit too tight for some runners.

     

     

    I did not have any problems with heel slippage and did not have to use the final eyelet, which is good, because the laces do run a little short.

    Upper

    Even though the upper feels cheap in hand, it performs well during runs.

    I was worried that the shoe would not have enough structure around my arch due to the change in placement of the Adidas logo, which wrapped around the foot in previous models, but that did not cause any issues. I felt stable and locked in.

     

     

    Additionally, the upper was comfortable. I did not develop any hotspots, have to fidget with the tongue or feel too restricted in any way.

    Midsole

    The Boost midsole won my heart in the Boston 5. The boost is mostly concentrated in the heel and midfoot. The forefoot contains standard EVA.

    This combination leads to a very smooth transition. When your foot lands, whether you strike with your heel or with the ball of your foot, the boost material cushions the impact and bounces you back up.

     

     

    Then, the firm and more responsive EVA, in tandem with the plastic torsion piece, helps you quickly turn over to the next stride. After 50 miles, the midsole has held up well and feels just as lively as it did during the first mile. The midsole makes the Boston 8 a very versatile shoe.

    The Boost and EVA material provide enough cushioning that I was comfortable on longer runs and its ability to transition smoothly and quickly made it easy for me to pick up the pace during a couple of fartlek workouts.

    The Boston 8 maintains its standing as one of the rare shoes that feel fast during a 5k and reliable enough to eat up the daily miles.

    Outsole

    The Continental Rubber Outsole performed very well. I had good traction on pavement that helped me maintain a quick turnover.

    I did not slip at all in the rain, even when I ran over metal or other slick surfaces. And on trails, mulch, and gravel my feet felt protected and gripped the terrain nicely.

     

     

    However, I am not sure how it holds up with regard to durability. After 50 miles, I have already noticed some worn areas on the outsole. Particularly, there’s a tear in the rubber at midfoot on the right shoe.

    This could be my fault–maybe I stepped on some grass or a sharp rock–but it’s worth mentioning. The Continental Rubber is still likely more durable than many competitors that use mostly an EVA outsole (think HOKA, Saucony Kinvara, etc.).

     

    Summary

    Overall, I enjoy running in the Boston 8 and will keep them in my rotation in the future. The shoe has a simple and race-like feel but can handle the rigors of daily training. The upper performs well but feels cheap in hand.

    The midsole provides a smooth transition between strides and adapts to your pace. The Continental Rubber outsole succeeds on any surface.

    I would recommend the Adidas Adizero Boston 8 for any runner that wants a lightweight shoe that they can rely on for anything.

    Pros

    • Feels light on the foot
    • Simple upper
    • Responsive midsole
    • Soft heel, yet bouncy heel cushioning
    • Versatile

    Cons

    • Feels cheap in hand, especially compared to other shoes in the $120 price range
    • Tear in the outsole (could be my fault)

    This expert has been verified by RunRepeat. Reviews are neutral, unbiased and based on extensive testing.

  • 90 / 100 | Mark Wood | Level 3 expert

    I think the Boston 8 has all the tools, all the technology in this shoe for you to go the distance.

  • 93 / 100 | Road Runner Sports | | Level 2 expert

    This is gonna take you from mile zero all the way to mile 26 with no problems. I can't wait to keep running in this shoe.

  • 90 / 100 | Road Trail Run | | Level 5 expert

    Overall a terrific, meat and potatoes daily trainer with subtle changes to the mid and outsole to provide a smooth and consistent ride that will last for many, many miles.

  • 80 / 100 | Believe in the Run | | Level 5 expert

    I thought this was a good shoe, but it didn’t jump out at me as a go-to.

Become an expert

  • The Adidas Adizero Boston 8 is a neutral running shoe that’s designed for those who like to take to the roads. This product features a relatively lightweight build to cater to extended running sessions like fun runs, speed training, and contests.
  • The visual aspect of this Adidas running shoe is what mainly sets it apart from its predecessor, the Adizero Boston Boost 7. While a helping of stitched-on overlays graced the sides of the progenitor, a few synthetic prints that are merely stitch-reinforced are the ones that adorn the Boston 8. Such a configuration, along with a minimalist look, makes it lighter than ever.
  • Continental™ rubber still serves as the external pad. This layer now has a redesigned tread-pattern to heighten flexibility on all areas of the platform. Horizontal traction pads ensure grip on the asphalt.

The standard measurements were used in the making of the Adidas Adizero Boston 8. People are encouraged to get a pair using their usual sizing expectations. When it comes to width, the available options are D – Medium and B – Medium for men and women, respectively.

Consumers are generally advised to try on the shoe first before making a purchase decision to achieve an in-shoe experience that is pleasant and form-accommodating.

This road running shoe has a semi-curved shape which allows the naturally curved outline of the human foot to acclimatize well inside the interior compartment.

The outsole unit of the Adidas Adizero Boston 8 features the Continental™ rubber, a compound that’s used for the tires of vehicles. This layer generously surrounds the base of the midsole, shielding it from the debilitating effects of continued use. Horizontal protrusions are responsible for doling out grip over the surfaces.

Flex grooves adorn the external pad. These shallow trenches are designed to make the platform flexible, thereby enabling the natural bending capacity of the foot as it goes through the gait cycle.

Boost™ serves as the base of the Adidas Adizero Boston 8’s cushioning system. This technology is made up of thermoplastic polyurethane (TPU) pellets that have been amalgamated and made into one cohesive piece. The result is a feature that is ready to absorb impact shock and distribute energy back to the foot, giving a reactive ride that lasts. Boost™ is a licensed technology that graces many of Adidas’ popular models, including the Ultra Boost.

The Energy Rail is a top layer that acts as the platform that supports the foot. This foam piece is meant to maintain the structural integrity of the whole midsole, delivering consistent cushioning for the runner.

The Torsion System is a thermoplastic sheet that is placed between the midsole and outsole. This feature prevents the sagging of the midsole while also helping with the quality of the heel-to-toe transitions.

The upper unit of the Adidas Adizero Boston 8 makes use of a multilayered mesh. This material has a light and stretchy build which accommodates the natural shape and motion of the foot. Breathing holes permit environmental air into the interior chamber, thus giving a cool and dry experience.

Thin prints grace the sides, bolstering the structural integrity of the textiles and heightening the foot-security.

The heel part has a stitched-on fabric counter that is also buttressed by printed overlays. This layer is designed to support the back of the foot, staving off in-shoe quivering or accidental shoe removals.

Some stitch-reinforcements motivate the robustness of the sides and the instep. Even the eyelets of the lacing system are bolstered to avert tearing or loosening of the threading.

A traditional lacing system fills the bridge of the silhouette. Flat laces crisscross through discreet eyelets that run from the throat to the collar. These elements adjust the tightness or looseness of the cover system.

Comparison

Author
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Jens Jakob Andersen

Jens Jakob is a fan of short distances with a 5K PR at 15:58 minutes. Based on 35 million race results, he's among the fastest 0.2% runners. Jens Jakob previously owned a running store, when he was also a competitive runner. His work is regularly featured in The New York Times, Washington Post, BBC and the likes as well as peer-reviewed journals. Finally, he has been a guest on +30 podcasts on running.

jens@runrepeat.com